I've saved the bigger parts of mine & have sewn them back together & reused them. My hoop requires a 13" length of stabilizer so I just trim off what I don't use & re use it? Does anyone have any good ideas on this?

I sometimes use full sheet on bottom and then pieces for top layer if i need two layers,the wash away I do the same and the real small pieces put in water and mix it and use it for spray starch.Be sure to run mixture threw A strainer so it don't plug the spray bottle.

Depends on what I'm embroidering and what kind of stabilizer used. Here's 2 ideas I've used:
1) After embroidering, cut the embroidery out like a donut hole from the piece of stabilizer. then you can just zigzag a patch and you're good to go
2) Depending on the orientation of your hoop and the width of the stabilizer roll, I have also just NOT CUT the stabilizer from the roll. Just roll a bit off, hoop it, then roll some more off so that the arm has full free movement. When you're done embroidering, cut the stabilizer close to the embroidery. This is not always possible, but it does save some if you can do it.